Unable to promote sources when extracting to a file

Hello,

This is my first time extracting constituents to a file in order to create source codes for each inclusion segment. I made sure to check both the "generate source codes" box and the "create promotions now" box before extracting, but after the process is complete, my source codes show up under the appeal but are not promoted.

I tried promoting them through the Create Promotions Report and through the Appeal Details screen but couldn't get any results from either.

Am I missing something? Or is there another way to assign source codes to inclusion segments other than extracting to a file?

We are using Version 11

Thanks!

Jenny